ac-power: add simple getopt() argument parsing to systemd-ac-power (#8516)
We should probably do that for all our tools, hence fill in this gap here.
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@ -18,19 +18,91 @@
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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***/
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#include <getopt.h>
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#include "util.h"
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#include "util.h"
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static bool arg_verbose = false;
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static void help(void) {
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printf("%s\n\n"
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"Report whether we are connected to an external power source.\n\n"
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" -h --help Show this help\n"
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" --version Show package version\n"
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" -v --verbose Show state as text\n"
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, program_invocation_short_name);
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}
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static int parse_argv(int argc, char *argv[]) {
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enum {
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ARG_VERSION = 0x100,
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};
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static const struct option options[] = {
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{ "help", no_argument, NULL, 'h' },
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{ "version", no_argument, NULL, ARG_VERSION },
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{ "verbose", no_argument, NULL, 'v' },
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{}
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};
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int c;
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assert(argc >= 0);
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assert(argv);
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while ((c = getopt_long(argc, argv, "hv", options, NULL)) >= 0)
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switch (c) {
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case 'h':
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help();
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return 0;
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case ARG_VERSION:
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return version();
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case 'v':
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arg_verbose = true;
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break;
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case '?':
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return -EINVAL;
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default:
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assert_not_reached("Unhandled option");
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}
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if (optind < argc) {
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log_error("%s takes no arguments.", program_invocation_short_name);
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return -EINVAL;
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}
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return 1;
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}
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int main(int argc, char *argv[]) {
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int main(int argc, char *argv[]) {
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int r;
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int r;
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/* This is mostly intended to be used for scripts which want
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/* This is mostly intended to be used for scripts which want
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* to detect whether AC power is plugged in or not. */
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* to detect whether AC power is plugged in or not. */
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log_parse_environment();
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log_open();
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r = parse_argv(argc, argv);
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if (r <= 0)
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goto finish;
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r = on_ac_power();
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r = on_ac_power();
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if (r < 0) {
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if (r < 0) {
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log_error_errno(r, "Failed to read AC status: %m");
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log_error_errno(r, "Failed to read AC status: %m");
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return EXIT_FAILURE;
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goto finish;
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}
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}
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return r != 0 ? EXIT_SUCCESS : EXIT_FAILURE;
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if (arg_verbose)
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puts(yes_no(r));
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finish:
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return r < 0 ? EXIT_FAILURE : !r;
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}
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}
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